MPI

Darshan

Darshan is a lightweight "scalable HPC I/O characterization tool".  It is intended to profile I/O by emitting log files to a consistent log location for systems administrators, and also provides scripts to create summary PDFs to characterize I/O in MPI-based programs.

Availability and Restrictions

Versions

The following versions of Darshan are available on OSC clusters:

OpenMPI

MPI is a standard library for performing parallel processing using a distributed-memory model. The Oakley, Ruby, and Owens clusters at OSC can use the OpenMPI implementation of the Message Passing Interface (MPI), which is based on MPICH.

MPJ-Express

MPJ-Express is a Java library that provides message passing capabilities for parallel computing in Java applications.

MPJ-Express is available on Oakley.

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